Clamping heat sink



FIG. 1 is an isometric of a clamping heat sink showing a new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a right side elevational view thereof, the left side elevational view being a mirror image of that shown. 

The ornamental design for clamping heat sink, as shown and described. 